If you want a refund for SuperGrok, first make sure Apple actually charged you...

https://hotel-wiki.win/index.php/SuperGrok_vs_X_Premium_-_Are_They_the_Same_Subscription%3F

If you want a refund for SuperGrok, first make sure Apple actually charged you by checking your purchase history or iOS Subscriptions. Remember, simply canceling doesn’t give you a refund. To request one, go to reportaproblem.apple